Garrett D'Amore wrote:
> As far as this case goes, I'd better like to understand why we needed
> a new class, instead of just using SYS.

That's the key question, which I haven't really seen anyone address in
this PSARC email thread. However, you can find a high-level answer in CR 
6806882:

"The basic issue is that the SYS scheduling class was not designed for
long-running CPU intensive workloads. We introduce a new SDC (System
Duty Cycle) scheduling class, which adjusts its threads' priority in 
order to give them a specified percentage of the processor.
It also gives them a scheduling quantum, which gives other threads at
the same priority on the same CPU a chance to run."

        Scott

-- 
Scott Rotondo
Principal Engineer, Solaris Security Technologies
President, Trusted Computing Group
Phone/FAX: +1 408 850 3655 (Internal x68278)

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